We look at the division of 33476788 by 221 
The aim is to understand the frequency of 221 in 33476788.

Let's proceed to step 1:
221 goes into 3 0 times with a remainder of 3.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 3 leaves us with 3.
Include the next digit (3) from the dividend after 3, then repeat: 33 / 221

Step 2:
If we divide 33 by 221, we get 0 and a remainder of 33.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 33 and we're left with 33.
Grab the next digit (4) from the dividend, add it to 33, then carry on: 334 / 221

Step 3:
The number 221 fits into 334 1 times, leaving a remainder of 113.
Put 1 as the next digit of the answer. 
Result so far: 1.0
The remainder is 113 after subtracting 221 from 334.
Append the next digit (7) from the dividend to 113 and continue with: 1137 / 221

Let's proceed to step 4:
1137 divided by 221 is 5 with a remainder of 32.
The number 5 becomes the next digit in our result. 
Result so far: 15.0
Deduct 1105 from 1137 and we're left with 32.
Include the next digit (6) from the dividend after 32, then repeat: 326 / 221

Moving on to step 5:
If we divide 326 by 221, we get 1 and a remainder of 105.
Record the quotient 1 as the next digit in the result. 
Result so far: 151.0
Subtracting 221 from 326 leaves us with 105.
Fetch the next digit (7) from the dividend, attach it to 105 and continue: 1057 / 221

Advancing to step 6:
If we divide 1057 by 221, we get 4 and a remainder of 173.
The next digit of our result is 4. 
Result so far: 1514.0
Subtract 884 from 1057 to get 173.
Include the next digit (8) from the dividend after 173, then repeat: 1738 / 221

Advancing to step 7:
1738 divided by 221 is 7 with a remainder of 191.
The number 7 becomes the next digit in our result. 
Result so far: 15147.0
Deduct 1547 from 1738 and we're left with 191.
Fetch the next digit (8) from the dividend, attach it to 191 and continue: 1918 / 221

On to step 8:
The number 221 fits into 1918 8 times, leaving a remainder of 150.
Write down 8 as next digit of the result. 
Result so far: 151478.0
Deduct 1768 from 1918 and we're left with 150.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1500, and continue the process.

Advancing to step 9:
221 goes into 1500 6 times with a remainder of 174.
The next digit of our result is 6. 
Result so far: 151478.6
Subtracting 1326 from 1500 leaves us with 174.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1740, and continue the process.

On to step 10:
The number 221 fits into 1740 7 times, leaving a remainder of 193.
Put 7 as the next digit of the answer. 
Result so far: 151478.67
Deduct 1547 from 1740 and we're left with 193.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1930, and continue the process.

Let's proceed to step 11:
221 can be fit into 1930 8 times, resulting in a remainder of 162.
Put 8 as the next digit of the answer. 
Result so far: 151478.678
The remainder is 162 after subtracting 1768 from 1930.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1620, and continue the process.

On to step 12:
221 can be fit into 1620 7 times, resulting in a remainder of 73.
The next digit of our result is 7. 
Result so far: 151478.6787
Deduct 1547 from 1620 and we're left with 73.
Since there are no more digits in the dividend, we add a zero to the remainder making it 730, and continue the process.

Step 13:
When dividing 730 by 221, we get 3 with a remainder of 67.
The number 3 becomes the next digit in our result. 
Result so far: 151478.67873
Subtracting 663 from 730 leaves us with 67.
Since there are no more digits in the dividend, we add a zero to the remainder making it 670, and continue the process.

Advancing to step 14:
The number 221 fits into 670 3 times, leaving a remainder of 7.
Use 3 as the next digit of our solution. 
Result so far: 151478.678733
Subtracting 663 from 670 leaves us with 7.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

After the division, we end up with 151478.678733 and a remainder of 7e-07.